Like money, these areas are true heartlands of national interest.
Labour's true heartlands are remain: four-fifths of Labour voters think May's deal will hurt the British economy and 91% of them don't trust the government to deliver a good Brexit.
America's cities are the country's true economic heartland, and much of our most important past is urban.
Check out this three minute epic journey through the true American heartland - with dance moves that'd make Justin Timberlake cry!
The local authority where personal savings are highest is South Buckinghamshire, followed by Mole Valley, in Surrey, then true blue heartlands such as Windsor and Epsom.
According to Steve Fothergill and Christina Beatty, economists at Sheffield Hallam university, the past five years of welfare reforms have hit parts of the post-industrial Labour-voting north up to four times harder than the true-blue heartlands.
Lewisham East is as true a Labour heartland as any seat in the country.
The Conservative choice, Caroline Johnson, appears to have all the right credentials to appeal in a true blue Tory heartland.
A true-blue Conservative heartland and the local council of key cabinet ministers, Surrey has repeatedly used one-off measures over recent years to balance the budget - something its latest accounts warn is "not repeatable".
"Heartland's true colours finally came through, and now people are jumping ship in quick order".
